Morgan, K., & Suter, S. (2014). Lessons in teaching number & place value in primary schools. SAGE/Learning Matters.
Lua i Stíl Chicago (17ú heag.)Morgan, Kath, agus Stephanie Suter. Lessons in Teaching Number & Place Value in Primary Schools. Los Angeles: SAGE/Learning Matters, 2014.
Lua MLA (9ú heag.)Morgan, Kath, agus Stephanie Suter. Lessons in Teaching Number & Place Value in Primary Schools. SAGE/Learning Matters, 2014.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.